diff --git a/Cargo.toml b/Cargo.toml
index 7253fd9..1e4d712 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -31,4 +31,4 @@ features = ["builder", "cache", "client", "gateway", "model", "utils", "unstable
 
 [dependencies.tokio]
 version = "1.0"
-features = ["macros", "rt-multi-thread"]
\ No newline at end of file
+features = ["macros", "rt-multi-thread"]
diff --git a/src/commands/config.rs b/src/commands/config.rs
index e59a5ba..7b46779 100644
--- a/src/commands/config.rs
+++ b/src/commands/config.rs
@@ -1,56 +1,89 @@
-use serenity::{prelude::Context, model::prelude::{application_command::ApplicationCommandInteraction, InteractionApplicationCommandCallbackDataFlags}};
+use serenity::{
+    model::prelude::{
+        application_command::ApplicationCommandInteraction,
+        InteractionApplicationCommandCallbackDataFlags,
+    },
+    prelude::Context,
+};
 
-use crate::{tts::{voicevox::voicevox::VOICEVOX, tts_type::TTSType}, data::DatabaseClientData};
+use crate::{
+    data::DatabaseClientData,
+    tts::{tts_type::TTSType, voicevox::voicevox::VOICEVOX},
+};
 
-pub async fn config_command(ctx: &Context, command: &ApplicationCommandInteraction) -> Result<(), Box<dyn std::error::Error>> {
+pub async fn config_command(
+    ctx: &Context,
+    command: &ApplicationCommandInteraction,
+) -> Result<(), Box<dyn std::error::Error>> {
     let data_read = ctx.data.read().await;
 
     let config = {
-        let database = data_read.get::<DatabaseClientData>().expect("Cannot get DatabaseClientData").clone();
+        let database = data_read
+            .get::<DatabaseClientData>()
+            .expect("Cannot get DatabaseClientData")
+            .clone();
         let mut database = database.lock().await;
-        database.get_user_config_or_default(command.user.id.0).await.unwrap().unwrap()
+        database
+            .get_user_config_or_default(command.user.id.0)
+            .await
+            .unwrap()
+            .unwrap()
     };
 
     let voicevox_speaker = config.voicevox_speaker.unwrap_or(1);
     let tts_type = config.tts_type.unwrap_or(TTSType::GCP);
 
-    command.create_interaction_response(&ctx.http, |f| {
-        f.interaction_response_data(|d| {
-            d.content("読み上げ設定")
-                .components(|c| {
-                    c.create_action_row(|a| {
-                        a.create_select_menu(|m| {
-                            m.custom_id("TTS_CONFIG_ENGINE")
-                                .options(|o| {
-                                    o.create_option(|co| {
-                                        co.label("Google TTS")
-                                            .value("TTS_CONFIG_ENGINE_SELECTED_GOOGLE")
-                                            .default_selection(tts_type == TTSType::GCP)
-                                    }).create_option(|co| {
-                                        co.label("VOICEVOX")
-                                            .value("TTS_CONFIG_ENGINE_SELECTED_VOICEVOX")
-                                            .default_selection(tts_type == TTSType::VOICEVOX)
-                                    })
-                                }).placeholder("読み上げAPIを選択")
-                        })
-                    }).create_action_row(|a| {
-                        a.create_select_menu(|m| {
-                            m.custom_id("TTS_CONFIG_VOICEVOX_SPEAKER")
-                                .options(|o| {
-                                    let mut o = o;
-                                    for (name, value) in VOICEVOX::get_speakers() {
-                                        o = o.create_option(|co| {
-                                            co.label(name)
-                                                .value(format!("TTS_CONFIG_VOICEVOX_SPEAKER_SELECTED_{}", value))
-                                                .default_selection(value == voicevox_speaker)
+    command
+        .create_interaction_response(&ctx.http, |f| {
+            f.interaction_response_data(|d| {
+                d.content("読み上げ設定")
+                    .components(|c| {
+                        c.create_action_row(|a| {
+                            a.create_select_menu(|m| {
+                                m.custom_id("TTS_CONFIG_ENGINE")
+                                    .options(|o| {
+                                        o.create_option(|co| {
+                                            co.label("Google TTS")
+                                                .value("TTS_CONFIG_ENGINE_SELECTED_GOOGLE")
+                                                .default_selection(tts_type == TTSType::GCP)
                                         })
-                                    }
-                                    o
-                                }).placeholder("VOICEVOX Speakerを指定")
+                                        .create_option(
+                                            |co| {
+                                                co.label("VOICEVOX")
+                                                    .value("TTS_CONFIG_ENGINE_SELECTED_VOICEVOX")
+                                                    .default_selection(
+                                                        tts_type == TTSType::VOICEVOX,
+                                                    )
+                                            },
+                                        )
+                                    })
+                                    .placeholder("読み上げAPIを選択")
+                            })
+                        })
+                        .create_action_row(|a| {
+                            a.create_select_menu(|m| {
+                                m.custom_id("TTS_CONFIG_VOICEVOX_SPEAKER")
+                                    .options(|o| {
+                                        let mut o = o;
+                                        for (name, value) in VOICEVOX::get_speakers() {
+                                            o = o.create_option(|co| {
+                                                co.label(name)
+                                                    .value(format!(
+                                                        "TTS_CONFIG_VOICEVOX_SPEAKER_SELECTED_{}",
+                                                        value
+                                                    ))
+                                                    .default_selection(value == voicevox_speaker)
+                                            })
+                                        }
+                                        o
+                                    })
+                                    .placeholder("VOICEVOX Speakerを指定")
+                            })
                         })
                     })
-                }).flags(InteractionApplicationCommandCallbackDataFlags::EPHEMERAL)
+                    .flags(InteractionApplicationCommandCallbackDataFlags::EPHEMERAL)
+            })
         })
-    }).await?;
+        .await?;
     Ok(())
 }
diff --git a/src/commands/mod.rs b/src/commands/mod.rs
index 2e7f2f6..ab78f39 100644
--- a/src/commands/mod.rs
+++ b/src/commands/mod.rs
@@ -1,3 +1,3 @@
+pub mod config;
 pub mod setup;
 pub mod stop;
-pub mod config;
\ No newline at end of file
diff --git a/src/commands/setup.rs b/src/commands/setup.rs
index 4b1a2f8..71c7488 100644
--- a/src/commands/setup.rs
+++ b/src/commands/setup.rs
@@ -1,24 +1,39 @@
-use serenity::{prelude::Context, model::prelude::{application_command::ApplicationCommandInteraction, InteractionApplicationCommandCallbackDataFlags, UserId}};
+use serenity::{
+    model::prelude::{
+        application_command::ApplicationCommandInteraction,
+        InteractionApplicationCommandCallbackDataFlags, UserId,
+    },
+    prelude::Context,
+};
 
 use crate::{data::TTSData, tts::instance::TTSInstance};
 
-pub async fn setup_command(ctx: &Context, command: &ApplicationCommandInteraction) -> Result<(), Box<dyn std::error::Error>> {
+pub async fn setup_command(
+    ctx: &Context,
+    command: &ApplicationCommandInteraction,
+) -> Result<(), Box<dyn std::error::Error>> {
     if let None = command.guild_id {
-        command.create_interaction_response(&ctx.http, |f| {
-            f.interaction_response_data(|d| {
-                d.content("このコマンドはサーバーでのみ使用可能です．").flags(InteractionApplicationCommandCallbackDataFlags::EPHEMERAL)
+        command
+            .create_interaction_response(&ctx.http, |f| {
+                f.interaction_response_data(|d| {
+                    d.content("このコマンドはサーバーでのみ使用可能です．")
+                        .flags(InteractionApplicationCommandCallbackDataFlags::EPHEMERAL)
+                })
             })
-        }).await?;
+            .await?;
         return Ok(());
     }
 
     let guild = command.guild_id.unwrap().to_guild_cached(&ctx.cache).await;
     if let None = guild {
-        command.create_interaction_response(&ctx.http, |f| {
-            f.interaction_response_data(|d| {
-                d.content("ギルドキャッシュを取得できませんでした．").flags(InteractionApplicationCommandCallbackDataFlags::EPHEMERAL)
+        command
+            .create_interaction_response(&ctx.http, |f| {
+                f.interaction_response_data(|d| {
+                    d.content("ギルドキャッシュを取得できませんでした．")
+                        .flags(InteractionApplicationCommandCallbackDataFlags::EPHEMERAL)
+                })
             })
-        }).await?;
+            .await?;
         return Ok(());
     }
     let guild = guild.unwrap();
@@ -29,40 +44,55 @@ pub async fn setup_command(ctx: &Context, command: &ApplicationCommandInteractio
         .and_then(|state| state.channel_id);
 
     if let None = channel_id {
-        command.create_interaction_response(&ctx.http, |f| {
-            f.interaction_response_data(|d| {
-                d.content("ボイスチャンネルに参加してから実行してください．").flags(InteractionApplicationCommandCallbackDataFlags::EPHEMERAL)
+        command
+            .create_interaction_response(&ctx.http, |f| {
+                f.interaction_response_data(|d| {
+                    d.content("ボイスチャンネルに参加してから実行してください．")
+                        .flags(InteractionApplicationCommandCallbackDataFlags::EPHEMERAL)
+                })
             })
-        }).await?;
+            .await?;
         return Ok(());
     }
 
     let channel_id = channel_id.unwrap();
 
-    let manager = songbird::get(ctx).await.expect("Cannot get songbird client.").clone();
+    let manager = songbird::get(ctx)
+        .await
+        .expect("Cannot get songbird client.")
+        .clone();
 
     let storage_lock = {
         let data_read = ctx.data.read().await;
-        data_read.get::<TTSData>().expect("Cannot get TTSStorage").clone()
+        data_read
+            .get::<TTSData>()
+            .expect("Cannot get TTSStorage")
+            .clone()
     };
 
     {
         let mut storage = storage_lock.write().await;
         if storage.contains_key(&guild.id) {
-            command.create_interaction_response(&ctx.http, |f| {
-                f.interaction_response_data(|d| {
-                    d.content("すでにセットアップしています．").flags(InteractionApplicationCommandCallbackDataFlags::EPHEMERAL)
+            command
+                .create_interaction_response(&ctx.http, |f| {
+                    f.interaction_response_data(|d| {
+                        d.content("すでにセットアップしています．")
+                            .flags(InteractionApplicationCommandCallbackDataFlags::EPHEMERAL)
+                    })
                 })
-            }).await?;
+                .await?;
             return Ok(());
         }
 
-        storage.insert(guild.id, TTSInstance {
-            before_message: None,
-            guild: guild.id,
-            text_channel: command.channel_id,
-            voice_channel: channel_id
-        });
+        storage.insert(
+            guild.id,
+            TTSInstance {
+                before_message: None,
+                guild: guild.id,
+                text_channel: command.channel_id,
+                voice_channel: channel_id,
+            },
+        );
     }
 
     let _handler = manager.join(guild.id.0, channel_id.0).await;
@@ -78,4 +108,4 @@ pub async fn setup_command(ctx: &Context, command: &ApplicationCommandInteractio
     }).await?;
 
     Ok(())
-}
\ No newline at end of file
+}
diff --git a/src/commands/stop.rs b/src/commands/stop.rs
index e16f5fa..5b31a71 100644
--- a/src/commands/stop.rs
+++ b/src/commands/stop.rs
@@ -1,24 +1,39 @@
-use serenity::{prelude::Context, model::prelude::{application_command::ApplicationCommandInteraction, InteractionApplicationCommandCallbackDataFlags, UserId}};
+use serenity::{
+    model::prelude::{
+        application_command::ApplicationCommandInteraction,
+        InteractionApplicationCommandCallbackDataFlags, UserId,
+    },
+    prelude::Context,
+};
 
 use crate::data::TTSData;
 
-pub async fn stop_command(ctx: &Context, command: &ApplicationCommandInteraction) -> Result<(), Box<dyn std::error::Error>> {
+pub async fn stop_command(
+    ctx: &Context,
+    command: &ApplicationCommandInteraction,
+) -> Result<(), Box<dyn std::error::Error>> {
     if let None = command.guild_id {
-        command.create_interaction_response(&ctx.http, |f| {
-            f.interaction_response_data(|d| {
-                d.content("このコマンドはサーバーでのみ使用可能です．").flags(InteractionApplicationCommandCallbackDataFlags::EPHEMERAL)
+        command
+            .create_interaction_response(&ctx.http, |f| {
+                f.interaction_response_data(|d| {
+                    d.content("このコマンドはサーバーでのみ使用可能です．")
+                        .flags(InteractionApplicationCommandCallbackDataFlags::EPHEMERAL)
+                })
             })
-        }).await?;
+            .await?;
         return Ok(());
     }
 
     let guild = command.guild_id.unwrap().to_guild_cached(&ctx.cache).await;
     if let None = guild {
-        command.create_interaction_response(&ctx.http, |f| {
-            f.interaction_response_data(|d| {
-                d.content("ギルドキャッシュを取得できませんでした．").flags(InteractionApplicationCommandCallbackDataFlags::EPHEMERAL)
+        command
+            .create_interaction_response(&ctx.http, |f| {
+                f.interaction_response_data(|d| {
+                    d.content("ギルドキャッシュを取得できませんでした．")
+                        .flags(InteractionApplicationCommandCallbackDataFlags::EPHEMERAL)
+                })
             })
-        }).await?;
+            .await?;
         return Ok(());
     }
     let guild = guild.unwrap();
@@ -29,29 +44,41 @@ pub async fn stop_command(ctx: &Context, command: &ApplicationCommandInteraction
         .and_then(|state| state.channel_id);
 
     if let None = channel_id {
-        command.create_interaction_response(&ctx.http, |f| {
-            f.interaction_response_data(|d| {
-                d.content("ボイスチャンネルに参加してから実行してください．").flags(InteractionApplicationCommandCallbackDataFlags::EPHEMERAL)
+        command
+            .create_interaction_response(&ctx.http, |f| {
+                f.interaction_response_data(|d| {
+                    d.content("ボイスチャンネルに参加してから実行してください．")
+                        .flags(InteractionApplicationCommandCallbackDataFlags::EPHEMERAL)
+                })
             })
-        }).await?;
+            .await?;
         return Ok(());
     }
 
-    let manager = songbird::get(ctx).await.expect("Cannot get songbird client.").clone();
+    let manager = songbird::get(ctx)
+        .await
+        .expect("Cannot get songbird client.")
+        .clone();
 
     let storage_lock = {
         let data_read = ctx.data.read().await;
-        data_read.get::<TTSData>().expect("Cannot get TTSStorage").clone()
+        data_read
+            .get::<TTSData>()
+            .expect("Cannot get TTSStorage")
+            .clone()
     };
 
     {
         let mut storage = storage_lock.write().await;
         if !storage.contains_key(&guild.id) {
-            command.create_interaction_response(&ctx.http, |f| {
-                f.interaction_response_data(|d| {
-                    d.content("すでに停止しています").flags(InteractionApplicationCommandCallbackDataFlags::EPHEMERAL)
+            command
+                .create_interaction_response(&ctx.http, |f| {
+                    f.interaction_response_data(|d| {
+                        d.content("すでに停止しています")
+                            .flags(InteractionApplicationCommandCallbackDataFlags::EPHEMERAL)
+                    })
                 })
-            }).await?;
+                .await?;
             return Ok(());
         }
 
@@ -60,11 +87,11 @@ pub async fn stop_command(ctx: &Context, command: &ApplicationCommandInteraction
 
     let _handler = manager.remove(guild.id.0).await;
 
-    command.create_interaction_response(&ctx.http, |f| {
-        f.interaction_response_data(|d| {
-            d.content("停止しました")
+    command
+        .create_interaction_response(&ctx.http, |f| {
+            f.interaction_response_data(|d| d.content("停止しました"))
         })
-    }).await?;
+        .await?;
 
     Ok(())
 }
diff --git a/src/config.rs b/src/config.rs
index 29b665e..63f03be 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -6,5 +6,5 @@ pub struct Config {
     pub token: String,
     pub application_id: u64,
     pub redis_url: String,
-    pub voicevox_key: String
-}
\ No newline at end of file
+    pub voicevox_key: String,
+}
diff --git a/src/data.rs b/src/data.rs
index 172e671..7ecbc86 100644
--- a/src/data.rs
+++ b/src/data.rs
@@ -1,8 +1,15 @@
-use crate::{tts::{gcp_tts::gcp_tts::TTS, voicevox::voicevox::VOICEVOX}, database::database::Database};
-use serenity::{prelude::{TypeMapKey, RwLock}, model::id::GuildId, futures::lock::Mutex};
+use crate::{
+    database::database::Database,
+    tts::{gcp_tts::gcp_tts::TTS, voicevox::voicevox::VOICEVOX},
+};
+use serenity::{
+    futures::lock::Mutex,
+    model::id::GuildId,
+    prelude::{RwLock, TypeMapKey},
+};
 
 use crate::tts::instance::TTSInstance;
-use std::{sync::Arc, collections::HashMap};
+use std::{collections::HashMap, sync::Arc};
 
 /// TTSInstance data
 pub struct TTSData;
diff --git a/src/database/database.rs b/src/database/database.rs
index f68cd1b..3720426 100644
--- a/src/database/database.rs
+++ b/src/database/database.rs
@@ -1,10 +1,12 @@
-use crate::tts::{gcp_tts::structs::voice_selection_params::VoiceSelectionParams, tts_type::TTSType};
+use crate::tts::{
+    gcp_tts::structs::voice_selection_params::VoiceSelectionParams, tts_type::TTSType,
+};
 
 use super::user_config::UserConfig;
 use redis::Commands;
 
 pub struct Database {
-    pub client: redis::Client
+    pub client: redis::Client,
 }
 
 impl Database {
@@ -12,22 +14,35 @@ impl Database {
         Self { client }
     }
 
-    pub async fn get_user_config(&mut self, user_id: u64) -> redis::RedisResult<Option<UserConfig>> {
+    pub async fn get_user_config(
+        &mut self,
+        user_id: u64,
+    ) -> redis::RedisResult<Option<UserConfig>> {
         if let Ok(connection) = self.client.get_connection() {
-            let config: String = connection.get(format!("discord_user:{}", user_id)).unwrap_or_default();
+            let config: String = connection
+                .get(format!("discord_user:{}", user_id))
+                .unwrap_or_default();
 
             match serde_json::from_str(&config) {
                 Ok(config) => Ok(Some(config)),
-                Err(_) => Ok(None)
+                Err(_) => Ok(None),
             }
         } else {
             Ok(None)
         }
     }
 
-    pub async fn set_user_config(&mut self, user_id: u64, config: UserConfig) -> redis::RedisResult<()> {
+    pub async fn set_user_config(
+        &mut self,
+        user_id: u64,
+        config: UserConfig,
+    ) -> redis::RedisResult<()> {
         let config = serde_json::to_string(&config).unwrap();
-        self.client.get_connection().unwrap().set::<String, String, ()>(format!("discord_user:{}", user_id), config).unwrap();
+        self.client
+            .get_connection()
+            .unwrap()
+            .set::<String, String, ()>(format!("discord_user:{}", user_id), config)
+            .unwrap();
         Ok(())
     }
 
@@ -35,7 +50,7 @@ impl Database {
         let voice_selection = VoiceSelectionParams {
             languageCode: String::from("ja-JP"),
             name: String::from("ja-JP-Wavenet-B"),
-            ssmlGender: String::from("neutral")
+            ssmlGender: String::from("neutral"),
         };
 
         let voice_type = TTSType::GCP;
@@ -43,15 +58,21 @@ impl Database {
         let config = UserConfig {
             tts_type: Some(voice_type),
             gcp_tts_voice: Some(voice_selection),
-            voicevox_speaker: Some(1)
+            voicevox_speaker: Some(1),
         };
 
-        self.client.get_connection().unwrap().set(format!("discord_user:{}", user_id), serde_json::to_string(&config).unwrap())?;
+        self.client.get_connection().unwrap().set(
+            format!("discord_user:{}", user_id),
+            serde_json::to_string(&config).unwrap(),
+        )?;
 
         Ok(())
     }
 
-    pub async fn get_user_config_or_default(&mut self, user_id: u64) -> redis::RedisResult<Option<UserConfig>> {
+    pub async fn get_user_config_or_default(
+        &mut self,
+        user_id: u64,
+    ) -> redis::RedisResult<Option<UserConfig>> {
         let config = self.get_user_config(user_id).await?;
         match config {
             Some(_) => Ok(config),
diff --git a/src/database/mod.rs b/src/database/mod.rs
index 895f6ac..46510b8 100644
--- a/src/database/mod.rs
+++ b/src/database/mod.rs
@@ -1,2 +1,2 @@
+pub mod database;
 pub mod user_config;
-pub mod database;
\ No newline at end of file
diff --git a/src/database/user_config.rs b/src/database/user_config.rs
index fc9b57d..f0ab66a 100644
--- a/src/database/user_config.rs
+++ b/src/database/user_config.rs
@@ -1,10 +1,12 @@
-use serde::{Serialize, Deserialize};
+use serde::{Deserialize, Serialize};
 
-use crate::tts::{gcp_tts::structs::voice_selection_params::VoiceSelectionParams, tts_type::TTSType};
+use crate::tts::{
+    gcp_tts::structs::voice_selection_params::VoiceSelectionParams, tts_type::TTSType,
+};
 
 #[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
 pub struct UserConfig {
     pub tts_type: Option<TTSType>,
     pub gcp_tts_voice: Option<VoiceSelectionParams>,
-    pub voicevox_speaker: Option<i64>
+    pub voicevox_speaker: Option<i64>,
 }
diff --git a/src/event_handler.rs b/src/event_handler.rs
index d8af6a2..7f352bf 100644
--- a/src/event_handler.rs
+++ b/src/event_handler.rs
@@ -1,11 +1,22 @@
-use serenity::{client::{EventHandler, Context}, async_trait, model::{gateway::Ready, interactions::Interaction, id::GuildId, channel::Message, voice::VoiceState, prelude::InteractionApplicationCommandCallbackDataFlags}};
-use crate::{events, commands::{setup::setup_command, stop::stop_command, config::config_command}, data::DatabaseClientData, tts::tts_type::TTSType};
+use crate::{
+    commands::{config::config_command, setup::setup_command, stop::stop_command},
+    data::DatabaseClientData,
+    events,
+    tts::tts_type::TTSType,
+};
+use serenity::{
+    async_trait,
+    client::{Context, EventHandler},
+    model::{
+        channel::Message, gateway::Ready, id::GuildId, interactions::Interaction,
+        prelude::InteractionApplicationCommandCallbackDataFlags, voice::VoiceState,
+    },
+};
 
 pub struct Handler;
 
 #[async_trait]
 impl EventHandler for Handler {
-
     async fn message(&self, ctx: Context, message: Message) {
         events::message_receive::message(ctx, message).await
     }
@@ -29,9 +40,16 @@ impl EventHandler for Handler {
                 let data_read = ctx.data.read().await;
 
                 let mut config = {
-                    let database = data_read.get::<DatabaseClientData>().expect("Cannot get DatabaseClientData").clone();
+                    let database = data_read
+                        .get::<DatabaseClientData>()
+                        .expect("Cannot get DatabaseClientData")
+                        .clone();
                     let mut database = database.lock().await;
-                    database.get_user_config_or_default(message_component.user.id.0).await.unwrap().unwrap()
+                    database
+                        .get_user_config_or_default(message_component.user.id.0)
+                        .await
+                        .unwrap()
+                        .unwrap()
                 };
 
                 let res = (*v).clone();
@@ -48,7 +66,13 @@ impl EventHandler for Handler {
                     }
                     _ => {
                         if res.starts_with("TTS_CONFIG_VOICEVOX_SPEAKER_SELECTED_") {
-                            config.voicevox_speaker = Some(i64::from_str_radix(&res.replace("TTS_CONFIG_VOICEVOX_SPEAKER_SELECTED_", ""), 10).unwrap());
+                            config.voicevox_speaker = Some(
+                                i64::from_str_radix(
+                                    &res.replace("TTS_CONFIG_VOICEVOX_SPEAKER_SELECTED_", ""),
+                                    10,
+                                )
+                                .unwrap(),
+                            );
                             config_changed = true;
                             voicevox_changed = true;
                         }
@@ -56,11 +80,17 @@ impl EventHandler for Handler {
                 }
 
                 if config_changed {
-                    let database = data_read.get::<DatabaseClientData>().expect("Cannot get DatabaseClientData").clone();
+                    let database = data_read
+                        .get::<DatabaseClientData>()
+                        .expect("Cannot get DatabaseClientData")
+                        .clone();
                     let mut database = database.lock().await;
-                    database.set_user_config(message_component.user.id.0, config.clone()).await.unwrap();
+                    database
+                        .set_user_config(message_component.user.id.0, config.clone())
+                        .await
+                        .unwrap();
 
-                    if voicevox_changed &&  config.tts_type.unwrap_or(TTSType::GCP) == TTSType::GCP {
+                    if voicevox_changed && config.tts_type.unwrap_or(TTSType::GCP) == TTSType::GCP {
                         message_component.create_interaction_response(&ctx.http, |f| {
                             f.interaction_response_data(|d| {
                                 d.content("設定しました\nこの音声を使うにはAPIをGoogleからVOICEVOXに変更する必要があります。")
@@ -68,12 +98,16 @@ impl EventHandler for Handler {
                             })
                         }).await.unwrap();
                     } else {
-                        message_component.create_interaction_response(&ctx.http, |f| {
-                            f.interaction_response_data(|d| {
-                                d.content("設定しました")
-                                    .flags(InteractionApplicationCommandCallbackDataFlags::EPHEMERAL)
+                        message_component
+                            .create_interaction_response(&ctx.http, |f| {
+                                f.interaction_response_data(|d| {
+                                    d.content("設定しました").flags(
+                                        InteractionApplicationCommandCallbackDataFlags::EPHEMERAL,
+                                    )
+                                })
                             })
-                        }).await.unwrap();
+                            .await
+                            .unwrap();
                     }
                 }
             }
diff --git a/src/events/message_receive.rs b/src/events/message_receive.rs
index 20f2f21..62f558c 100644
--- a/src/events/message_receive.rs
+++ b/src/events/message_receive.rs
@@ -1,4 +1,4 @@
-use serenity::{prelude::Context, model::prelude::Message};
+use serenity::{model::prelude::Message, prelude::Context};
 
 use crate::data::TTSData;
 
@@ -17,7 +17,10 @@ pub async fn message(ctx: Context, message: Message) {
 
     let storage_lock = {
         let data_read = ctx.data.read().await;
-        data_read.get::<TTSData>().expect("Cannot get TTSStorage").clone()
+        data_read
+            .get::<TTSData>()
+            .expect("Cannot get TTSStorage")
+            .clone()
     };
 
     {
@@ -34,4 +37,4 @@ pub async fn message(ctx: Context, message: Message) {
 
         instance.read(message, &ctx).await;
     }
-}
\ No newline at end of file
+}
diff --git a/src/events/mod.rs b/src/events/mod.rs
index 236a826..da1ccea 100644
--- a/src/events/mod.rs
+++ b/src/events/mod.rs
@@ -1,3 +1,3 @@
-pub mod ready;
 pub mod message_receive;
-pub mod voice_state_update;
\ No newline at end of file
+pub mod ready;
+pub mod voice_state_update;
diff --git a/src/events/ready.rs b/src/events/ready.rs
index 4fa0c4d..f3a31fb 100644
--- a/src/events/ready.rs
+++ b/src/events/ready.rs
@@ -1,20 +1,16 @@
-use serenity::{prelude::Context, model::prelude::{Ready, application_command::ApplicationCommand}};
+use serenity::{
+    model::prelude::{application_command::ApplicationCommand, Ready},
+    prelude::Context,
+};
 
 pub async fn ready(ctx: Context, ready: Ready) {
     println!("{} is connected!", ready.user.name);
 
     let _ = ApplicationCommand::set_global_application_commands(&ctx.http, |commands| {
-        commands.create_application_command(|command| {
-            command.name("stop")
-                .description("Stop tts")
-        });
-        commands.create_application_command(|command| {
-            command.name("setup")
-                .description("Setup tts")
-        });
-        commands.create_application_command(|command| {
-            command.name("config")
-                .description("Config")
-        })
-    }).await;
-}
\ No newline at end of file
+        commands.create_application_command(|command| command.name("stop").description("Stop tts"));
+        commands
+            .create_application_command(|command| command.name("setup").description("Setup tts"));
+        commands.create_application_command(|command| command.name("config").description("Config"))
+    })
+    .await;
+}
diff --git a/src/events/voice_state_update.rs b/src/events/voice_state_update.rs
index a9e5656..53e128f 100644
--- a/src/events/voice_state_update.rs
+++ b/src/events/voice_state_update.rs
@@ -1,6 +1,16 @@
-use serenity::{prelude::Context, model::{prelude::GuildId, voice::VoiceState}};
+use serenity::{
+    model::{prelude::GuildId, voice::VoiceState},
+    prelude::Context,
+};
 
-use crate::{data::TTSData, implement::{voice_move_state::{VoiceMoveStateTrait, VoiceMoveState}, member_name::ReadName}, tts::message::AnnounceMessage};
+use crate::{
+    data::TTSData,
+    implement::{
+        member_name::ReadName,
+        voice_move_state::{VoiceMoveState, VoiceMoveStateTrait},
+    },
+    tts::message::AnnounceMessage,
+};
 
 pub async fn voice_state_update(
     ctx: Context,
@@ -15,7 +25,10 @@ pub async fn voice_state_update(
 
     let storage_lock = {
         let data_read = ctx.data.read().await;
-        data_read.get::<TTSData>().expect("Cannot get TTSStorage").clone()
+        data_read
+            .get::<TTSData>()
+            .expect("Cannot get TTSStorage")
+            .clone()
     };
 
     {
@@ -29,15 +42,19 @@ pub async fn voice_state_update(
         let voice_move_state = new.move_state(&old, instance.voice_channel);
 
         let message: Option<String> = match voice_move_state {
-            VoiceMoveState::JOIN => Some(format!("{} さんが通話に参加しました", new.member.unwrap().read_name())),
-            VoiceMoveState::LEAVE => Some(format!("{} さんが通話から退出しました", new.member.unwrap().read_name())),
+            VoiceMoveState::JOIN => Some(format!(
+                "{} さんが通話に参加しました",
+                new.member.unwrap().read_name()
+            )),
+            VoiceMoveState::LEAVE => Some(format!(
+                "{} さんが通話から退出しました",
+                new.member.unwrap().read_name()
+            )),
             _ => None,
         };
 
         if let Some(message) = message {
-            instance.read(AnnounceMessage {
-                message
-            }, &ctx).await;
+            instance.read(AnnounceMessage { message }, &ctx).await;
         }
 
         if voice_move_state == VoiceMoveState::LEAVE {
@@ -51,10 +68,13 @@ pub async fn voice_state_update(
             if del_flag {
                 storage.remove(&guild_id);
 
-                let manager = songbird::get(&ctx).await.expect("Cannot get songbird client.").clone();
+                let manager = songbird::get(&ctx)
+                    .await
+                    .expect("Cannot get songbird client.")
+                    .clone();
 
                 manager.remove(guild_id.0).await.unwrap();
             }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/src/implement/member_name.rs b/src/implement/member_name.rs
index 6a10779..e41b937 100644
--- a/src/implement/member_name.rs
+++ b/src/implement/member_name.rs
@@ -8,4 +8,4 @@ impl ReadName for Member {
     fn read_name(&self) -> String {
         self.nick.clone().unwrap_or(self.user.name.clone())
     }
-}
\ No newline at end of file
+}
diff --git a/src/implement/message.rs b/src/implement/message.rs
index c467bb7..3fd5b9b 100644
--- a/src/implement/message.rs
+++ b/src/implement/message.rs
@@ -1,17 +1,19 @@
-use std::{fs::File, io::Write, env};
+use std::{env, fs::File, io::Write};
 
 use async_trait::async_trait;
-use serenity::{prelude::Context, model::prelude::Message};
+use serenity::{model::prelude::Message, prelude::Context};
 
 use crate::{
-    data::{TTSClientData, DatabaseClientData},
+    data::{DatabaseClientData, TTSClientData},
     tts::{
+        gcp_tts::structs::{
+            audio_config::AudioConfig, synthesis_input::SynthesisInput,
+            synthesize_request::SynthesizeRequest,
+        },
         instance::TTSInstance,
         message::TTSMessage,
         tts_type::TTSType,
-        gcp_tts::structs::{
-            audio_config::AudioConfig, synthesis_input::SynthesisInput, synthesize_request::SynthesizeRequest
-        }, validator
+        validator,
     },
 };
 
@@ -42,7 +44,11 @@ impl TTSMessage for Message {
         };
 
         if self.attachments.len() > 0 {
-            res = format!("{}<break time=\"200ms\"/>{}個の添付ファイル", res, self.attachments.len());
+            res = format!(
+                "{}<break time=\"200ms\"/>{}個の添付ファイル",
+                res,
+                self.attachments.len()
+            );
         }
 
         instance.before_message = Some(self.clone());
@@ -54,34 +60,51 @@ impl TTSMessage for Message {
         let text = self.parse(instance, ctx).await;
 
         let data_read = ctx.data.read().await;
-        let storage = data_read.get::<TTSClientData>().expect("Cannot get GCP TTSClientStorage").clone();
+        let storage = data_read
+            .get::<TTSClientData>()
+            .expect("Cannot get GCP TTSClientStorage")
+            .clone();
         let mut tts = storage.lock().await;
 
         let config = {
-            let database = data_read.get::<DatabaseClientData>().expect("Cannot get DatabaseClientData").clone();
+            let database = data_read
+                .get::<DatabaseClientData>()
+                .expect("Cannot get DatabaseClientData")
+                .clone();
             let mut database = database.lock().await;
-            database.get_user_config_or_default(self.author.id.0).await.unwrap().unwrap()
+            database
+                .get_user_config_or_default(self.author.id.0)
+                .await
+                .unwrap()
+                .unwrap()
         };
 
         let audio = match config.tts_type.unwrap_or(TTSType::GCP) {
-            TTSType::GCP => {
-                tts.0.synthesize(SynthesizeRequest {
+            TTSType::GCP => tts
+                .0
+                .synthesize(SynthesizeRequest {
                     input: SynthesisInput {
                         text: None,
-                        ssml: Some(format!("<speak>{}</speak>", text))
+                        ssml: Some(format!("<speak>{}</speak>", text)),
                     },
                     voice: config.gcp_tts_voice.unwrap(),
                     audioConfig: AudioConfig {
                         audioEncoding: String::from("mp3"),
                         speakingRate: 1.2f32,
-                        pitch: 1.0f32
-                    }
-                }).await.unwrap()
-            }
+                        pitch: 1.0f32,
+                    },
+                })
+                .await
+                .unwrap(),
 
-            TTSType::VOICEVOX => {
-                tts.1.synthesize(text.replace("<break time=\"200ms\"/>", "、"), config.voicevox_speaker.unwrap_or(1)).await.unwrap()
-            }
+            TTSType::VOICEVOX => tts
+                .1
+                .synthesize(
+                    text.replace("<break time=\"200ms\"/>", "、"),
+                    config.voicevox_speaker.unwrap_or(1),
+                )
+                .await
+                .unwrap(),
         };
 
         let uuid = uuid::Uuid::new_v4().to_string();
diff --git a/src/implement/mod.rs b/src/implement/mod.rs
index f4e04b8..172d6e2 100644
--- a/src/implement/mod.rs
+++ b/src/implement/mod.rs
@@ -1,3 +1,3 @@
-pub mod message;
 pub mod member_name;
-pub mod voice_move_state;
\ No newline at end of file
+pub mod message;
+pub mod voice_move_state;
diff --git a/src/implement/voice_move_state.rs b/src/implement/voice_move_state.rs
index 87cdb5a..2b65f51 100644
--- a/src/implement/voice_move_state.rs
+++ b/src/implement/voice_move_state.rs
@@ -1,4 +1,4 @@
-use serenity::model::{voice::VoiceState, prelude::ChannelId};
+use serenity::model::{prelude::ChannelId, voice::VoiceState};
 
 pub trait VoiceMoveStateTrait {
     fn move_state(&self, old: &Option<VoiceState>, target_channel: ChannelId) -> VoiceMoveState;
@@ -8,7 +8,7 @@ pub trait VoiceMoveStateTrait {
 pub enum VoiceMoveState {
     JOIN,
     LEAVE,
-    NONE
+    NONE,
 }
 
 impl VoiceMoveStateTrait for VoiceState {
@@ -17,10 +17,10 @@ impl VoiceMoveStateTrait for VoiceState {
 
         if let None = old.clone() {
             return if target_channel == new.channel_id.unwrap() {
-                        VoiceMoveState::JOIN
-                    } else {
-                        VoiceMoveState::NONE
-                    }
+                VoiceMoveState::JOIN
+            } else {
+                VoiceMoveState::NONE
+            };
         }
 
         let old = (*old).clone().unwrap();
@@ -46,9 +46,7 @@ impl VoiceMoveStateTrait for VoiceState {
                     VoiceMoveState::NONE
                 }
             }
-            _ => {
-                VoiceMoveState::NONE
-            }
+            _ => VoiceMoveState::NONE,
         }
     }
-}
\ No newline at end of file
+}
diff --git a/src/main.rs b/src/main.rs
index 59c4760..ba1d65d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,23 +1,25 @@
+mod commands;
 mod config;
-mod event_handler;
-mod tts;
-mod implement;
 mod data;
 mod database;
+mod event_handler;
 mod events;
-mod commands;
+mod implement;
+mod tts;
 
-use std::{sync::Arc, collections::HashMap};
+use std::{collections::HashMap, sync::Arc};
 
 use config::Config;
-use data::{TTSData, TTSClientData, DatabaseClientData};
+use data::{DatabaseClientData, TTSClientData, TTSData};
 use database::database::Database;
 use event_handler::Handler;
-use tts::{gcp_tts::gcp_tts::TTS, voicevox::voicevox::VOICEVOX};
 use serenity::{
-    client::{Client, bridge::gateway::GatewayIntents},
-    framework::StandardFramework, prelude::RwLock, futures::lock::Mutex
+    client::{bridge::gateway::GatewayIntents, Client},
+    framework::StandardFramework,
+    futures::lock::Mutex,
+    prelude::RwLock,
 };
+use tts::{gcp_tts::gcp_tts::TTS, voicevox::voicevox::VOICEVOX};
 
 use songbird::SerenityInit;
 
@@ -30,10 +32,7 @@ use songbird::SerenityInit;
 /// client.start().await;
 /// ```
 async fn create_client(prefix: &str, token: &str, id: u64) -> Result<Client, serenity::Error> {
-    let framework = StandardFramework::new()
-    .configure(|c| c
-        .with_whitespace(true)
-        .prefix(prefix));
+    let framework = StandardFramework::new().configure(|c| c.with_whitespace(true).prefix(prefix));
 
     Client::builder(token)
         .event_handler(Handler)
@@ -51,12 +50,14 @@ async fn main() {
     let config: Config = toml::from_str(&config).expect("Cannot load config file.");
 
     // Create discord client
-    let mut client = create_client(&config.prefix, &config.token, config.application_id).await.expect("Err creating client");
+    let mut client = create_client(&config.prefix, &config.token, config.application_id)
+        .await
+        .expect("Err creating client");
 
     // Create GCP TTS client
     let tts = match TTS::new("./credentials.json".to_string()).await {
         Ok(tts) => tts,
-        Err(err) => panic!("{}", err)
+        Err(err) => panic!("{}", err),
     };
 
     let voicevox = VOICEVOX::new(config.voicevox_key);
diff --git a/src/tts/gcp_tts/gcp_tts.rs b/src/tts/gcp_tts/gcp_tts.rs
index 8cfc12b..acf9d33 100644
--- a/src/tts/gcp_tts/gcp_tts.rs
+++ b/src/tts/gcp_tts/gcp_tts.rs
@@ -1,21 +1,22 @@
-use gcp_auth::Token;
 use crate::tts::gcp_tts::structs::{
-    synthesize_request::SynthesizeRequest,
-    synthesize_response::SynthesizeResponse,
+    synthesize_request::SynthesizeRequest, synthesize_response::SynthesizeResponse,
 };
+use gcp_auth::Token;
 
 #[derive(Clone)]
 pub struct TTS {
     pub token: Token,
-    pub credentials_path: String
+    pub credentials_path: String,
 }
 
 impl TTS {
-
     pub async fn update_token(&mut self) -> Result<(), gcp_auth::Error> {
         if self.token.has_expired() {
-            let authenticator = gcp_auth::from_credentials_file(self.credentials_path.clone()).await?;
-            let token = authenticator.get_token(&["https://www.googleapis.com/auth/cloud-platform"]).await?;
+            let authenticator =
+                gcp_auth::from_credentials_file(self.credentials_path.clone()).await?;
+            let token = authenticator
+                .get_token(&["https://www.googleapis.com/auth/cloud-platform"])
+                .await?;
             self.token = token;
         }
 
@@ -24,11 +25,13 @@ impl TTS {
 
     pub async fn new(credentials_path: String) -> Result<TTS, gcp_auth::Error> {
         let authenticator = gcp_auth::from_credentials_file(credentials_path.clone()).await?;
-        let token = authenticator.get_token(&["https://www.googleapis.com/auth/cloud-platform"]).await?;
+        let token = authenticator
+            .get_token(&["https://www.googleapis.com/auth/cloud-platform"])
+            .await?;
 
         Ok(TTS {
             token,
-            credentials_path
+            credentials_path,
         })
     }
 
@@ -53,19 +56,29 @@ impl TTS {
     ///    }
     /// }).await.unwrap();
     /// ```
-    pub async fn synthesize(&mut self, request: SynthesizeRequest) -> Result<Vec<u8>, Box<dyn std::error::Error>> {
+    pub async fn synthesize(
+        &mut self,
+        request: SynthesizeRequest,
+    ) -> Result<Vec<u8>, Box<dyn std::error::Error>> {
         self.update_token().await.unwrap();
         let client = reqwest::Client::new();
-        match client.post("https://texttospeech.googleapis.com/v1/text:synthesize")
+        match client
+            .post("https://texttospeech.googleapis.com/v1/text:synthesize")
             .header(reqwest::header::CONTENT_TYPE, "application/json")
-            .header(reqwest::header::AUTHORIZATION, format!("Bearer {}", self.token.as_str()))
+            .header(
+                reqwest::header::AUTHORIZATION,
+                format!("Bearer {}", self.token.as_str()),
+            )
             .body(serde_json::to_string(&request).unwrap())
-            .send().await {
-                Ok(ok) => {
-                    let response: SynthesizeResponse = serde_json::from_str(&ok.text().await.expect("")).unwrap();
-                    Ok(base64::decode(response.audioContent).unwrap()[..].to_vec())
-                },
-                Err(err) => Err(Box::new(err))
+            .send()
+            .await
+        {
+            Ok(ok) => {
+                let response: SynthesizeResponse =
+                    serde_json::from_str(&ok.text().await.expect("")).unwrap();
+                Ok(base64::decode(response.audioContent).unwrap()[..].to_vec())
+            }
+            Err(err) => Err(Box::new(err)),
         }
     }
 }
diff --git a/src/tts/gcp_tts/mod.rs b/src/tts/gcp_tts/mod.rs
index 69fde75..8548096 100644
--- a/src/tts/gcp_tts/mod.rs
+++ b/src/tts/gcp_tts/mod.rs
@@ -1,2 +1,2 @@
 pub mod gcp_tts;
-pub mod structs;
\ No newline at end of file
+pub mod structs;
diff --git a/src/tts/gcp_tts/structs/audio_config.rs b/src/tts/gcp_tts/structs/audio_config.rs
index 1f5aa75..076df85 100644
--- a/src/tts/gcp_tts/structs/audio_config.rs
+++ b/src/tts/gcp_tts/structs/audio_config.rs
@@ -1,4 +1,4 @@
-use serde::{Serialize, Deserialize};
+use serde::{Deserialize, Serialize};
 
 /// Example:
 /// ```rust
@@ -13,5 +13,5 @@ use serde::{Serialize, Deserialize};
 pub struct AudioConfig {
     pub audioEncoding: String,
     pub speakingRate: f32,
-    pub pitch: f32
-}
\ No newline at end of file
+    pub pitch: f32,
+}
diff --git a/src/tts/gcp_tts/structs/mod.rs b/src/tts/gcp_tts/structs/mod.rs
index 62dcbee..60e4ec8 100644
--- a/src/tts/gcp_tts/structs/mod.rs
+++ b/src/tts/gcp_tts/structs/mod.rs
@@ -1,5 +1,5 @@
 pub mod audio_config;
 pub mod synthesis_input;
 pub mod synthesize_request;
+pub mod synthesize_response;
 pub mod voice_selection_params;
-pub mod synthesize_response;
\ No newline at end of file
diff --git a/src/tts/gcp_tts/structs/synthesis_input.rs b/src/tts/gcp_tts/structs/synthesis_input.rs
index e4deccb..d7a1464 100644
--- a/src/tts/gcp_tts/structs/synthesis_input.rs
+++ b/src/tts/gcp_tts/structs/synthesis_input.rs
@@ -1,4 +1,4 @@
-use serde::{Serialize, Deserialize};
+use serde::{Deserialize, Serialize};
 
 /// Example:
 /// ```rust
@@ -10,5 +10,5 @@ use serde::{Serialize, Deserialize};
 #[derive(Serialize, Deserialize, Debug)]
 pub struct SynthesisInput {
     pub text: Option<String>,
-    pub ssml: Option<String>
-}
\ No newline at end of file
+    pub ssml: Option<String>,
+}
diff --git a/src/tts/gcp_tts/structs/synthesize_request.rs b/src/tts/gcp_tts/structs/synthesize_request.rs
index 96aaae6..540fdcb 100644
--- a/src/tts/gcp_tts/structs/synthesize_request.rs
+++ b/src/tts/gcp_tts/structs/synthesize_request.rs
@@ -1,9 +1,8 @@
-use serde::{Serialize, Deserialize};
 use crate::tts::gcp_tts::structs::{
-    synthesis_input::SynthesisInput,
-    audio_config::AudioConfig,
+    audio_config::AudioConfig, synthesis_input::SynthesisInput,
     voice_selection_params::VoiceSelectionParams,
 };
+use serde::{Deserialize, Serialize};
 
 /// Example:
 /// ```rust
@@ -30,4 +29,4 @@ pub struct SynthesizeRequest {
     pub input: SynthesisInput,
     pub voice: VoiceSelectionParams,
     pub audioConfig: AudioConfig,
-}
\ No newline at end of file
+}
diff --git a/src/tts/gcp_tts/structs/synthesize_response.rs b/src/tts/gcp_tts/structs/synthesize_response.rs
index 8ca495c..71985cb 100644
--- a/src/tts/gcp_tts/structs/synthesize_response.rs
+++ b/src/tts/gcp_tts/structs/synthesize_response.rs
@@ -1,7 +1,7 @@
-use serde::{Serialize, Deserialize};
+use serde::{Deserialize, Serialize};
 
 #[derive(Serialize, Deserialize, Debug)]
 #[allow(non_snake_case)]
 pub struct SynthesizeResponse {
-    pub audioContent: String
-}
\ No newline at end of file
+    pub audioContent: String,
+}
diff --git a/src/tts/gcp_tts/structs/voice_selection_params.rs b/src/tts/gcp_tts/structs/voice_selection_params.rs
index 625272f..37c78bd 100644
--- a/src/tts/gcp_tts/structs/voice_selection_params.rs
+++ b/src/tts/gcp_tts/structs/voice_selection_params.rs
@@ -1,4 +1,4 @@
-use serde::{Serialize, Deserialize};
+use serde::{Deserialize, Serialize};
 
 /// Example:
 /// ```rust
@@ -13,5 +13,5 @@ use serde::{Serialize, Deserialize};
 pub struct VoiceSelectionParams {
     pub languageCode: String,
     pub name: String,
-    pub ssmlGender: String
-}
\ No newline at end of file
+    pub ssmlGender: String,
+}
diff --git a/src/tts/instance.rs b/src/tts/instance.rs
index 707661f..1968991 100644
--- a/src/tts/instance.rs
+++ b/src/tts/instance.rs
@@ -1,12 +1,18 @@
-use serenity::{model::{channel::Message, id::{ChannelId, GuildId}}, prelude::Context};
+use serenity::{
+    model::{
+        channel::Message,
+        id::{ChannelId, GuildId},
+    },
+    prelude::Context,
+};
 
-use crate::{tts::message::TTSMessage};
+use crate::tts::message::TTSMessage;
 
 pub struct TTSInstance {
     pub before_message: Option<Message>,
     pub text_channel: ChannelId,
     pub voice_channel: ChannelId,
-    pub guild: GuildId
+    pub guild: GuildId,
 }
 
 impl TTSInstance {
@@ -17,7 +23,8 @@ impl TTSInstance {
     /// instance.read(message, &ctx).await;
     /// ```
     pub async fn read<T>(&mut self, message: T, ctx: &Context)
-    where T: TTSMessage
+    where
+        T: TTSMessage,
     {
         let path = message.synthesize(self, ctx).await;
 
@@ -25,7 +32,9 @@ impl TTSInstance {
             let manager = songbird::get(&ctx).await.unwrap();
             let call = manager.get(self.guild).unwrap();
             let mut call = call.lock().await;
-            let input = songbird::input::ffmpeg(path).await.expect("File not found.");
+            let input = songbird::input::ffmpeg(path)
+                .await
+                .expect("File not found.");
             call.enqueue_source(input);
         }
     }
diff --git a/src/tts/message.rs b/src/tts/message.rs
index b93b915..59b4fcd 100644
--- a/src/tts/message.rs
+++ b/src/tts/message.rs
@@ -1,16 +1,18 @@
-use std::{fs::File, io::Write, env};
+use std::{env, fs::File, io::Write};
 
 use async_trait::async_trait;
 use serenity::prelude::Context;
 
-use crate::{tts::instance::TTSInstance, data::TTSClientData};
+use crate::{data::TTSClientData, tts::instance::TTSInstance};
 
-use super::gcp_tts::structs::{synthesize_request::SynthesizeRequest, synthesis_input::SynthesisInput, audio_config::AudioConfig, voice_selection_params::VoiceSelectionParams};
+use super::gcp_tts::structs::{
+    audio_config::AudioConfig, synthesis_input::SynthesisInput,
+    synthesize_request::SynthesizeRequest, voice_selection_params::VoiceSelectionParams,
+};
 
 /// Message trait that can be used to synthesize text to speech.
 #[async_trait]
 pub trait TTSMessage {
-
     /// Parse the message for synthesis.
     ///
     /// Example:
@@ -36,31 +38,41 @@ pub struct AnnounceMessage {
 impl TTSMessage for AnnounceMessage {
     async fn parse(&self, instance: &mut TTSInstance, _ctx: &Context) -> String {
         instance.before_message = None;
-        format!(r#"<speak>アナウンス<break time="200ms"/>{}</speak>"#, self.message)
+        format!(
+            r#"<speak>アナウンス<break time="200ms"/>{}</speak>"#,
+            self.message
+        )
     }
 
     async fn synthesize(&self, instance: &mut TTSInstance, ctx: &Context) -> String {
         let text = self.parse(instance, ctx).await;
         let data_read = ctx.data.read().await;
-        let storage = data_read.get::<TTSClientData>().expect("Cannot get TTSClientStorage").clone();
+        let storage = data_read
+            .get::<TTSClientData>()
+            .expect("Cannot get TTSClientStorage")
+            .clone();
         let mut storage = storage.lock().await;
 
-        let audio = storage.0.synthesize(SynthesizeRequest {
-            input: SynthesisInput {
-                text: None,
-                ssml: Some(text)
-            },
-            voice: VoiceSelectionParams {
-                languageCode: String::from("ja-JP"),
-                name: String::from("ja-JP-Wavenet-B"),
-                ssmlGender: String::from("neutral")
-            },
-            audioConfig: AudioConfig {
-                audioEncoding: String::from("mp3"),
-                speakingRate: 1.2f32,
-                pitch: 1.0f32
-            }
-        }).await.unwrap();
+        let audio = storage
+            .0
+            .synthesize(SynthesizeRequest {
+                input: SynthesisInput {
+                    text: None,
+                    ssml: Some(text),
+                },
+                voice: VoiceSelectionParams {
+                    languageCode: String::from("ja-JP"),
+                    name: String::from("ja-JP-Wavenet-B"),
+                    ssmlGender: String::from("neutral"),
+                },
+                audioConfig: AudioConfig {
+                    audioEncoding: String::from("mp3"),
+                    speakingRate: 1.2f32,
+                    pitch: 1.0f32,
+                },
+            })
+            .await
+            .unwrap();
 
         let uuid = uuid::Uuid::new_v4().to_string();
 
@@ -72,4 +84,4 @@ impl TTSMessage for AnnounceMessage {
 
         file_path.into_os_string().into_string().unwrap()
     }
-}
\ No newline at end of file
+}
diff --git a/src/tts/mod.rs b/src/tts/mod.rs
index 8199dc4..bd92226 100644
--- a/src/tts/mod.rs
+++ b/src/tts/mod.rs
@@ -1,6 +1,6 @@
 pub mod gcp_tts;
-pub mod voicevox;
+pub mod instance;
 pub mod message;
 pub mod tts_type;
-pub mod instance;
-pub mod validator;
\ No newline at end of file
+pub mod validator;
+pub mod voicevox;
diff --git a/src/tts/tts_type.rs b/src/tts/tts_type.rs
index 1dcaf6f..20c90f0 100644
--- a/src/tts/tts_type.rs
+++ b/src/tts/tts_type.rs
@@ -3,5 +3,5 @@ use serde::{Deserialize, Serialize};
 #[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
 pub enum TTSType {
     GCP,
-    VOICEVOX
-}
\ No newline at end of file
+    VOICEVOX,
+}
diff --git a/src/tts/voicevox/mod.rs b/src/tts/voicevox/mod.rs
index 67ae331..a57a59a 100644
--- a/src/tts/voicevox/mod.rs
+++ b/src/tts/voicevox/mod.rs
@@ -1,2 +1,2 @@
 pub mod structs;
-pub mod voicevox;
\ No newline at end of file
+pub mod voicevox;
diff --git a/src/tts/voicevox/structs/accent_phrase.rs b/src/tts/voicevox/structs/accent_phrase.rs
index cf9846b..c99ff29 100644
--- a/src/tts/voicevox/structs/accent_phrase.rs
+++ b/src/tts/voicevox/structs/accent_phrase.rs
@@ -1,4 +1,4 @@
-use serde::{Serialize, Deserialize};
+use serde::{Deserialize, Serialize};
 
 use super::mora::Mora;
 
@@ -7,5 +7,5 @@ pub struct AccentPhrase {
     pub moras: Vec<Mora>,
     pub accent: f64,
     pub pause_mora: Option<Mora>,
-    pub is_interrogative: bool
-}
\ No newline at end of file
+    pub is_interrogative: bool,
+}
diff --git a/src/tts/voicevox/structs/audio_query.rs b/src/tts/voicevox/structs/audio_query.rs
index d059c49..90c1680 100644
--- a/src/tts/voicevox/structs/audio_query.rs
+++ b/src/tts/voicevox/structs/audio_query.rs
@@ -1,4 +1,4 @@
-use serde::{Serialize, Deserialize};
+use serde::{Deserialize, Serialize};
 
 use super::accent_phrase::AccentPhrase;
 
@@ -14,5 +14,5 @@ pub struct AudioQuery {
     pub postPhonemeLength: f64,
     pub outputSamplingRate: f64,
     pub outputStereo: bool,
-    pub kana: Option<String>
-}
\ No newline at end of file
+    pub kana: Option<String>,
+}
diff --git a/src/tts/voicevox/structs/mod.rs b/src/tts/voicevox/structs/mod.rs
index b229b2f..3688db7 100644
--- a/src/tts/voicevox/structs/mod.rs
+++ b/src/tts/voicevox/structs/mod.rs
@@ -1,3 +1,3 @@
-pub mod mora;
+pub mod accent_phrase;
 pub mod audio_query;
-pub mod accent_phrase;
\ No newline at end of file
+pub mod mora;
diff --git a/src/tts/voicevox/structs/mora.rs b/src/tts/voicevox/structs/mora.rs
index c7582f8..1810c19 100644
--- a/src/tts/voicevox/structs/mora.rs
+++ b/src/tts/voicevox/structs/mora.rs
@@ -1,4 +1,4 @@
-use serde::{Serialize, Deserialize};
+use serde::{Deserialize, Serialize};
 
 #[derive(Serialize, Deserialize, Clone, Debug)]
 pub struct Mora {
@@ -7,5 +7,5 @@ pub struct Mora {
     pub consonant_length: Option<f64>,
     pub vowel: String,
     pub vowel_length: f64,
-    pub pitch: f64
-}
\ No newline at end of file
+    pub pitch: f64,
+}
diff --git a/src/tts/voicevox/voicevox.rs b/src/tts/voicevox/voicevox.rs
index fd64fac..0847de7 100644
--- a/src/tts/voicevox/voicevox.rs
+++ b/src/tts/voicevox/voicevox.rs
@@ -2,7 +2,7 @@ const API_URL: &str = "https://api.su-shiki.com/v2/voicevox/audio";
 
 #[derive(Clone)]
 pub struct VOICEVOX {
-    pub key: String
+    pub key: String,
 }
 
 impl VOICEVOX {
@@ -33,21 +33,30 @@ impl VOICEVOX {
     }
 
     pub fn new(key: String) -> Self {
-        Self {
-            key
-        }
+        Self { key }
     }
 
-    pub async fn synthesize(&self, text: String, speaker: i64) -> Result<Vec<u8>, Box<dyn std::error::Error>> {
+    pub async fn synthesize(
+        &self,
+        text: String,
+        speaker: i64,
+    ) -> Result<Vec<u8>, Box<dyn std::error::Error>> {
         let client = reqwest::Client::new();
-        match client.post(API_URL).query(&[("speaker", speaker.to_string()), ("text", text), ("key", self.key.clone())]).send().await {
+        match client
+            .post(API_URL)
+            .query(&[
+                ("speaker", speaker.to_string()),
+                ("text", text),
+                ("key", self.key.clone()),
+            ])
+            .send()
+            .await
+        {
             Ok(response) => {
                 let body = response.bytes().await?;
                 Ok(body.to_vec())
             }
-            Err(err) => {
-                Err(Box::new(err))
-            }
+            Err(err) => Err(Box::new(err)),
         }
     }
-}
\ No newline at end of file
+}